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July 30, 2012, 23:52 |
Numerical Towing Tank Velocity Ramp
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#1 |
Senior Member
KHB
Join Date: Aug 2010
Location: Singapore
Posts: 118
Rep Power: 15 |
Hi all,
I am simulating a towing tank and would like to do a simulation where the model start from rest (0m/s) to a test speed, say 1m/s. I would like to know on how to ramp up the velocity in using the VOF model? I tried to do a simple simulation where there is no model at all, and using the boundary condition as those specified in the DFBI Boat tutorial. Except that I change the Velocity Magnitude boundary condition using a field function of $Time I am using dt of 0.01s, so after one time step, I expect the speed in the whole domain should be 0.01 m/s. But it is not and even after 100 iteration it is not converging to 0.01m/s Does anyone can help me in this? |
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